How do I turn on two-step sign-in?

Settings › Security › Two-factor authentication

Switch on Two-factor authentication in Settings › Security. Scan the code with an authenticator app, type the six-digit code it shows, and save the backup codes somewhere safe. From then on sign-in asks for the current code after your password. A backup code works once each if you lose the phone. It is strongly recommended before any live trading.

Step by step

1. Switch it onSettings › Security › Two-factor authentication.
2. Scan and confirmAny authenticator app. Type the code it shows to finish.
3. Keep the backup codesEach works once. Sign-in has a Use a backup code link for them.
4. Switching it offThe same switch, confirmed with a current code.